198379985376050 has 24 divisors (see below), whose sum is σ = 372640107193092. Its totient is φ = 78566330840000.

The previous prime is 198379985376029. The next prime is 198379985376091. The reversal of 198379985376050 is 50673589973891.

It is a Cunningham number, because it is equal to 14084743²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 155567422092889 + 42812563283161 = 12472667^2 + 6543131^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19641577661 + ... + 19641587760.

Almost surely, 2^{198379985376050} is an apocalyptic number.

198379985376050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198379985376050 is a deficient number, since it is larger than the sum of its proper divisors (174260121817042).

198379985376050 is a wasteful number, since it uses less digits than its factorization.

198379985376050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39283165534 (or 39283165529 counting only the distinct ones).

The product of its (nonzero) digits is 3086294400, while the sum is 80.

The spelling of 198379985376050 in words is "one hundred ninety-eight trillion, three hundred seventy-nine billion, nine hundred eighty-five million, three hundred seventy-six thousand, fifty".